Conditional return: access to class members

[mbolli]

https://phpstan.org/r/bc57c5fc-38a9-4b2f-9dec-c331951da805

Is it somehow possible to do this?

/**
 * @template T of Relationship
 * @template U of Entity
 */
class RelationshipProxy {
	public function __construct(
		/** @param U $model */private Entity $model, 
		/** @param T $relationship */private Relationship $relationship
	) {}

	/**
	 * @return ($this->relationship is ManyToMany ? U[] : U|null)
	 */
	public function resolve(): Entity|array|null {
		return $this->relationship->resolve($this->model);
	}
}

[ondrejmirtes]

You need to ask about T, not about property: https://phpstan.org/r/4990f201-cc03-4322-9ddf-2f2e2a270c13

You should also verify with \PHPStan\dumpType() if the type behaves as expected.